“What would happen if five of America’s top eleven most beloathed talk-show hosts all talked on top of each other for an hour?” Jimmy Kimmel says at the start of the first episode of the intriguing and short-lived podcast “Strike Force Five.” “We’re about to find out.” For a handful of episodes (currently eight, plus a few more in the can and on the way), Kimmel, Stephen Colbert, Jimmy Fallon, Seth Meyers, and John Oliver became a podcast-host supergroup—riffing, regaling, and reading ads—in a high-profile effort to support their shows’ staffs during the writers’ strike. As the W.G.A. negotiated for rights that its members should have had years ago, including protection against A.I. and fair pay for work shown on streaming platforms, “Strike Force Five,” on Spotify, reminded us why we’ve ...